How can one ensure proper separation of variables in PHP output, such as adding spaces or line breaks between parameters?

When outputting variables in PHP, you can ensure proper separation by concatenating them with spaces or line breaks. This can be done by adding the desired separator within the echo statement or using the PHP_EOL constant for line breaks.

// Example of adding spaces between variables
$var1 = "Hello";
$var2 = "World";

echo $var1 . " " . $var2;

// Example of adding line breaks between variables
$var3 = "Line 1";
$var4 = "Line 2";

echo $var3 . PHP_EOL . $var4;